1/*
2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <string.h>
11
12#include <openssl/evp.h>
13#include "crypto/evp.h"
14#include "internal/provider.h"
15#include "evp_local.h"
16
17EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len)
18{
19 EVP_CIPHER *cipher = evp_cipher_new();
20
21 if (cipher != NULL) {
22 cipher->nid = cipher_type;
23 cipher->block_size = block_size;
24 cipher->key_len = key_len;
25 }
26 return cipher;
27}
28
29EVP_CIPHER *EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher)
30{
31 EVP_CIPHER *to = NULL;
32
33 /*
34 * Non-legacy EVP_CIPHERs can't be duplicated like this.
35 * Use EVP_CIPHER_up_ref() instead.
36 */
37 if (cipher->prov != NULL)
38 return NULL;
39
40 if ((to = EVP_CIPHER_meth_new(cipher->nid, cipher->block_size,
41 cipher->key_len)) != NULL) {
42 CRYPTO_RWLOCK *lock = to->lock;
43
44 memcpy(to, cipher, sizeof(*to));
45 to->lock = lock;
46 }
47 return to;
48}
49
50void EVP_CIPHER_meth_free(EVP_CIPHER *cipher)
51{
52 EVP_CIPHER_free(cipher);
53}
54
55int EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len)
56{
57 if (cipher->iv_len != 0)
58 return 0;
59
60 cipher->iv_len = iv_len;
61 return 1;
62}
63
64int EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags)
65{
66 if (cipher->flags != 0)
67 return 0;
68
69 cipher->flags = flags;
70 return 1;
71}
72
73int EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size)
74{
75 if (cipher->ctx_size != 0)
76 return 0;
77
78 cipher->ctx_size = ctx_size;
79 return 1;
80}
81
82int EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher,
83 int (*init) (EVP_CIPHER_CTX *ctx,
84 const unsigned char *key,
85 const unsigned char *iv,
86 int enc))
87{
88 if (cipher->init != NULL)
89 return 0;
90
91 cipher->init = init;
92 return 1;
93}
94
95int EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher,
96 int (*do_cipher) (EVP_CIPHER_CTX *ctx,
97 unsigned char *out,
98 const unsigned char *in,
99 size_t inl))
100{
101 if (cipher->do_cipher != NULL)
102 return 0;
103
104 cipher->do_cipher = do_cipher;
105 return 1;
106}
107
108int EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher,
109 int (*cleanup) (EVP_CIPHER_CTX *))
110{
111 if (cipher->cleanup != NULL)
112 return 0;
113
114 cipher->cleanup = cleanup;
115 return 1;
116}
117
118int EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher,
119 int (*set_asn1_parameters) (EVP_CIPHER_CTX *,
120 ASN1_TYPE *))
121{
122 if (cipher->set_asn1_parameters != NULL)
123 return 0;
124
125 cipher->set_asn1_parameters = set_asn1_parameters;
126 return 1;
127}
128
129int EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher,
130 int (*get_asn1_parameters) (EVP_CIPHER_CTX *,
131 ASN1_TYPE *))
132{
133 if (cipher->get_asn1_parameters != NULL)
134 return 0;
135
136 cipher->get_asn1_parameters = get_asn1_parameters;
137 return 1;
138}
139
140int EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher,
141 int (*ctrl) (EVP_CIPHER_CTX *, int type,
142 int arg, void *ptr))
143{
144 if (cipher->ctrl != NULL)
145 return 0;
146
147 cipher->ctrl = ctrl;
148 return 1;
149}
150
151
152int (*EVP_CIPHER_meth_get_init(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx,
153 const unsigned char *key,
154 const unsigned char *iv,
155 int enc)
156{
157 return cipher->init;
158}
159int (*EVP_CIPHER_meth_get_do_cipher(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *ctx,
160 unsigned char *out,
161 const unsigned char *in,
162 size_t inl)
163{
164 return cipher->do_cipher;
165}
166
167int (*EVP_CIPHER_meth_get_cleanup(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *)
168{
169 return cipher->cleanup;
170}
171
172int (*EVP_CIPHER_meth_get_set_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
173 ASN1_TYPE *)
174{
175 return cipher->set_asn1_parameters;
176}
177
178int (*EVP_CIPHER_meth_get_get_asn1_params(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
179 ASN1_TYPE *)
180{
181 return cipher->get_asn1_parameters;
182}
183
184int (*EVP_CIPHER_meth_get_ctrl(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
185 int type, int arg,
186 void *ptr)
187{
188 return cipher->ctrl;
189}
190
191